Eliezer wrote:
> For example, suppose that you're on a game show called "ExtroQuiz" and
> there are three doors: A, B, and C. One door has a prize behind it. You
> pick door C. The game show host opens up door A, and shows you that it's
> empty. What is the probability that the prize is behind door B? Answer:
> 0%. Why? Because the game show host *knows* the standard answer to this
> riddle, *knows* that most Extropians will switch to B, and he opens A *if
> and only if* the prize is actually behind C.
On ExtroQuiz, if you pick door C, and the prize is behind door B, apparently
the gameshow host does not open door A and show that it is empty. What,
then, does the host do instead?
Emlyn
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